Elasmobranchii (haaien en roggen) (sharks and rays) >
Squaliformes (Sleeper and dogfish sharks) >
Squalidae (Dogfish sharks)
Etymology: Squalus: Genus name from Latin 'squalus' meaning shark (Ref. 6885, 27436); edmundsi: Named for Matt Edmunds, formerly with CSIRO Marine Laboratory in the 1990s..
More on authors: White, Last & Stevens.
Environment: milieu / climate zone / depth range / distribution range
Ecologie
marien; diepte 204 - 850 m (Ref. 58442), usually 300 - 500 m (Ref. 58442). Tropical
Eastern Indian Ocean: Western Australia and Indonesia.
Grootte / Gewicht / Leeftijd
Maturity: Lm ? range ? - ? cm
Max length : 70.0 cm TL mannelijk / geslacht onbekend; (Ref. 58442); 86.6 cm TL (female)
Korte beschrijving
Determinatiesleutels | Morfologie | Morfometrie
This moderate-sized species of the ‘mitsukurii group’ has the following set of characters: moderately elongate body, depth 9.9-11.5% TL; narrowly triangular snout, moderately long, preoral length 2.0-2.44 times the horizontal prenarial length, 10.3-10.8% TL, mouth width 1.56-1.81 (1.73) times the horizontal prenarial length; pre-first dorsal length 27.7-30.0 (28.5)% TL; pre-second dorsal length 60.2-62.9 (61.3)% TL; interdorsal space 23.5-25.6 (24.7)% TL; weakly bifurcated anterior nasal flap; first dorsal fin large, upright, first dorsal-fin height 7.0-8.0% TL; first dorsal-fin spine strong, upright and broad-based; second dorsal-fin spine long, moderately broad-based; prepectoral length 21.9-23.1 (22.6)% TL; pelvic-caudal space 25.0-26.7 (25.9)% TL; pectoral fin of adult individuals not falcate; pectoral-fin inner margin relatively short, 6.4-7.1% TL; caudal bar is oblique, extending along base of lower lobe to caudal fork, less than 0.1-0.2 of posterior margin of upper lobe, upper caudal fringe narrow, with a large dark saddle, distinctly closer to tip of lobe than its base; flank denticles are strongly tricuspidate; monospondylous centra 43-44, precaudal centra 86-91, total centra 1130-120 (Ref. 58442).
Commonly caught by demersal longline fisheries operating in deepwater; utilized for its meat, fins and liver oil which is of high value (Ref. 58048).
Levenscyclus en paargedrag
Maturities | Voortplanting | Spawnings | Egg(s) | Fecundities | Larven
Distinct pairing with embrace (Ref. 205).
White, W.T., P.R. Last and J.D. Stevens, 2007. Two new species of Squalus of the 'mitsukurii group' from the Indo-Pacific. pp. 71-81. In P.R. Last, W.T. White and J.J. Pogonoski Descriptions of new dogfishes of the genus Squalus (Squaloidea: Squalidae). CSIRO Marine and Atmospheric Research Paper No. 014. 130 pp. (Ref. 58442)
Status op de Rode Lijst van het IUCN (Ref. 130435)
Gevaar voor de mens
Harmless
Gebruik door de mens
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Estimates based on models
Preferred temperature (Ref.
123201): 6.6 - 13.7, mean 9.9 °C (based on 256 cells).
Fylogenetische diversiteitsindex (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00339 (0.00162 - 0.00707), b=3.10 (2.93 - 3.27), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
Trofisch niveau (Ref.
69278): 4.3 ±0.4 se; based on size and trophs of closest relatives
Weerstandsvermogen (Ref.
120179): Zeer laag, minimale populatieverdubbelingstijd meer dan 14 jaar (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Moderate to high vulnerability (55 of 100).
![Image of Squalus edmundsi (Edmund\](/images/thumbnails/gif/tn_SQUALIT0.gif "Image of Squalus edmundsi (Edmund\")
